fenEnglishOxford American Thesaurusfen noun they opposed the drainage of the fen: marsh, marshland, salt marsh, fenland, wetland, bog, peat bog, bogland, swamp, swampland; Scottish, & Northern English moss, carr; Irish corcass; North American bayou, moor, pocosin, salina; archaic marish.
EnglishOxford American Thesaurus
